Safety door lock for motor vehicles



July 22, 1952 R. A. ONSTbTT 2,6 0

I SAFETY DOOR LOCK FOR MOTOR VEHICLES 2 Sl-lEETS-Sl-IEET 1 Filed March 2, 1950 m W T m mm N OMW a My .4; g a A \m I Jilly 1 R.A.ONSTOTT- i SAFETY .DOOR LOCK FOR MOTOR VEHICLES Filed March 2. 1950- J Z'SHEETS-SHEETZ Patented July 2 2, 1952 UNlTE-Dfg -sTATES PATENT OFFICE v i 7 2,604,180 1 I -.,i

SAFETY DOORLOCK FOR Moron VEHICLES a ten one, Pittsburgh, Pa.';' Margaret. FL 1 Onstottexecutrix of said Robert A. Onstotty "deceased;'assignorto Margaret F. Onstott ApplicationMarch 2, 1950, Serial No. 147,270

i 3 Claims. (o1.-13o-s2 This invention relatestocertain new anduse- ,ful improvementsin safety door locks for motor vehicles andthe like. ;;i,;j- ,c s

The; primarygobject ofthe invention is to pro- Figure 2 is afragmentary perspectiveiview,

partly in section, similar toIFigure 1; showing the clutch depressed and displaced out of the. path of movement of the safetybar to permit opening I ..vide a safety doorlock for motor and other ve- 5 movement of the vehicle door by theusual door hicles, such as coaches, school busses, and public operating mechanism,

, v. conveyances that is operative for, maintaining Referring more :indetail to the accompanying the entrance v and exit ,door;;of; the vehicle in drawings,tthere iszfragmentarily, illustrated the closed position while the vehicle is in motion and interior portion of the'front endofa motor coach, the source of power of engine is indriving comschool bus, or other publiciconveyance. the refermunication withground-wheels through the meence character 5 .designatingca floor section, the dium of clutch, devices. cowl being shown at 6, the .ingtlrluriienttbgardor Numerous accidents have occurred by the-purpanelat I, and theyusuaLwin s ie ds a The posefulor-accidentalopening of the doors of a side wall 9 has the usual double hinged doors movingmotor driven vehicle,- and another object 15, comprising sections I0 vi and .i ll. I The ,reference of this invention is to provide locking means character [2 designates aportionlof-a pedestal for holding the doors ,of a ;moving vehicle in for a drivers seat which wasgomitted forthe better closed position when the clutch elements beillustration of, the invention, the 'hand, brake tween the power plant of thevehicle and the being shown at 13, while the gearshift lever is driven, axle -are,engaged. v indicated by the reference character [4. A clutch A still further object of the invention is to propedal is shown at l5 and the :numeral l6 denotes videa safety door lock for motor coaches, school the usual brake pedal. The foot operated throttle busses. and other publicconveyances wherein a is located beneath the usual upwardly tensioned safety bar-extends between the closure door ofthe accelerator pedal H. ,j Y 1 7 vehicle and an extension, arm on the shank of a While the hinged door sections l0 and Il may gclutch-pedaly with such extension arm being be opened and closed in any preferred manner, ,gagedby and in the pathof movementofthe there is herein shown for, illustrative purposes safgety bar when the clutch is engaged for the only a, well-known'type eomprisingihingedly'con-' dlivmthavehiland with said extension nected links I8, with-an operating handle20 at member 1 c D L$hethe hinged connection, the other end of thelink Clutch pedal ip t move n f Safety I8:beingpivotally'mountedas at; 2,] on a bracket ,r a i opfiningm? the door by the usual mounted on the-instrument board or panel], T1001 p s mec1 1an1Smwhile the outer end ofthe door opening link l9 A still further ob ect of the invention is to 1 pivotany connecttdto a bracket 2 carried provide a safety door lock of the foregoing charby t d001- t q, t 111 be understood acterwherein a safety bar extends between the t t t handle 21) for t lmanuttuy bp ,reh l fii rs ands shank e t n n on the clutch door mechanism is proximity of the steering pedal w th a sep arable connect1on in the safety d i s 23 and the operators s t, v 7

bar P be manuanY released to m The present invention'pro'vides a'safety lock of the Vehicle door m for the hinged doors when the clutch is in enwgg ggz gggigg g fifgggggfig t gg g iggf aged position for establishing communication tion is better understood, the same consists in bepween the power plant of vehicle and the the novel form, combination and arrangement or g z thls .safety lock of parts hereinafter more fully described, shown c u es an e ongafad r0 extendmg transversely in the accompanying drawings, and claimed I of the floor 5 ad acent the lower end of the ver- In the drawings: tlcal wall or cowl 6 with the end of the rod 24 Figure 1 is a fragmentary perspective View, adjacent the vehicle operator passing through a partly in section, of the drivers compartment of guide eyelet 25 for abutting Contact with an arm a motor coach or the like and fragmentarily il- '50 25 extending rearwardly from the Shank 0f lustrating the hinged doors for the vehicle and the Clutch Pe al 5- The other end of the rod a safety bar interposed between the doors and i4 is reakrwardly curved as at 24 in a direction the shank of a clutch pedal with the clutch in oward he hinged doors and has a separable engaged position to restrain movement of the connection With a relatively short rod 28 that safety bar and opening movement of the doors. is p v y attached to a bracket 29 carried y ing a slide rod abutting the clutch pedal arm at one end and pivotally attached at its other end of an inverted Ll-shaped vention, the construction and use thereof shouldg at once be apparent, it being noted that when the vehicle is in motion with the clutch engaged or in a raised position, thelextension armizt on r the shank 21 of the clutch pedal l is in the'path of movement of the elongated rod-"24, and this safety lock mechanism being interposed between the hinged door sections 10 and II and the clutch pedal, it is impossible to open the doors'by'the manually operated door opening mechanism. ,When the vehicle iscbrought to a stop and the clutch pedal. l5-is disengaged or pressed toward :the, floor of the vehicle, lowering movement of the clutch pedal shank 27 displaces the extension'arm'251aterally'of'the elongated rod 24' so ing and leaving the vehicle, while the removal oi the U-shaped 'bolt or clevis 3| will break the safety lock connection between the hinged doors and clutch pedal to permit operation of the door operating mechanism for opening of the doors in an emergency. It willalso be understood that'- the elongated rod is positioned sufiiciently below the accelerator pedal H for the correct operation of the latter.

While there is herein shown and described the preferred embodiment of the invention, it is V nevertheless to be understood that minor changes 'fe made therein without departing from the "spiritand s n u- I claim:

1. In combinationwith a vehime r trance doors, manually operated opening and closing mechanism -therefor,"a motor,'a driven axleand a clutch andclutch pedal controlling communication between the motorancl axle, said clutch pedal having a stemprovided with a lateral arm, means interposed between the doors and clutch pedal operative to prevent opening movement of the doors when the clutch is in engaged driving position, said mechanism includto said doors, a guide for said sliderod fixed adjacent said clutch pedal arm, said slide rod being formed of separable sections whereby upon separation of said sections the doors may be opened when the clutch is in engaged driving H position, and; manually removable means fixedly 'connecting'said sections. '7

2. In combination with a vehicle having en trance doors, manually operated opening and closing-mechanism therefor, a motor, a driven axle a'nda clutch and clutch pedal controlling communication between the motor and axle,

means interposed'between the doors and clutch pedal operative to prevent opening movement of the doors when the clutch is in engaged driving position. said mechanism including a slide rod abutting the clutch pedal at one end and pivotally attached at its other end to said doors, an arm extension on the clutch pedal constituting the abutment for the adjacent end of the slide rod, a guide for said slide rod fixed adjacent said clutch pedal arm and an -abutment stop laterally of the clutch pedal for limiting sliding movement of saidrod.

' 3. In combination with a vehicle having entrance doors, manually operated opening and closing'mechanism there for, a motor, a driven axle anda clutch and clutch pedal controlling communication between the motor and axle, means interposed between the doors and clutch pedal operative to prevent opening movement of the doors when the clutchis in engaged driving position, said mechanismincluding a slide rod abutting the clutch pedal at one end and pivotally attached at its other end to said doors, said slide rod being formed -ofseparable sections whereby upon separation of said sections the doors may be opened when the clutch is in engaged driving position, 'manually removable means fixedlyconnecting said sections, an arm extension on the clutch pedal constituting the abutment for the adjacent end of the slide rod, a guide for said slide rod fixed adjacent said clutch pedal arm, and an abutment stop laterally of the clutch pedal for limiting sliding movement of said rod. 7 I V N TQ L appearances :orcrnn The mates-am of..record in the file of this patent: f

UNITED STATES PATENTS Number Name Date 1,092,493 Lawrenz Apr. 7, 1914 1,664,042 McGinley Mar. 27, 1928 1,736,189 Demand Nov. 19, 1929 

